A semiconductor laser used for direct measurement of the blood perfusion of tissue
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F F de Mul1, M H Koelink, A L Weijers
1University of Twente, Department of Applied Physics, Enschede, The Netherlands.
IEEE Transactions on Bio-Medical Engineering
|February 1, 1993
Abstract:
An instrument consisting merely of a semiconductor laser in its own housing was used to measure the blood perfusion in tissue. Use is made of the feedback of Doppler-scattered light to the photodiode in the laser housing. A recording perfusion of a finger under occlusion of blood flow in the arm is shown.